The Beckett Igniter 31231U AIRGUIDE KIT is a must-have for any airgun enthusiast This airgun accessory kit includes an airguide tube, airguide cap, and airguide spring The airguide tube helps to align the pellet in the barrel, while the airguide cap prevents the pellet from entering the barrel prematurely The airguide spring helps to keep the airguide tube and cap in place